Node control method, system, and apparatus

Abstract

A method includes: a first node monitors a status of a connection between the first node and a center system, and switches to the standby node working mode when the status of the connection between the first node and the center system is disconnected. The center system monitors a status of a connection between the center system and the first node, and sends a switch-to-master command to a second node when the status of the connection between the center system and the first node is disconnected. The second node switches to the master node working mode based on the switch-to-master command. Accordingly, whether a master node is switched to a standby node is determined through connectivity detection between the node and the center system, and whether a standby node is switched to a master node is determined based on an indication of the center system.

What is claimed is: 
     
         1 . A method, applicable to a node control system, wherein the node control system comprises:
 a first node, a second node, and a center system, wherein the first node and the second node are located in an edge system, the first node and the second node are both connected to the center system, a current working mode of the first node is a master node working mode, and a second current working mode of the second node is a standby node working mode, and   wherein the method comprises:   monitoring, by the first node, a status of a connection between the first node and the center system, and switching, by the first node, to the standby node working mode when the connection between the first node and the center system is disconnected;   monitoring, by the center system, the status of the connection between the center system and the first node, and sending a switch-to-master command to the second node when the connection between the center system and the first node is disconnected, wherein the switch-to-master command notifies the second node to switch from the standby node working mode to the master node working mode; and   switching, by the second node, to the master node working mode based on the switch-to-master command.   
     
     
         2 . The method according to  claim 1 , wherein the method further comprises:
 monitoring, by the first node, a second status of a second connection between the first node and the second node, or monitoring, by the second node, the second status of the second connection between the second node and the first node; and   maintaining the current working mode of the first node or the second current working mode of the second node when determining that the second connection between the first node and the second node is disconnected or connected.   
     
     
         3 . The method according to  claim 1 , wherein the monitoring, by the first node, the status of the connection between the first node and the center system comprises:
 monitoring, by the first node, a third status of a third connection between the first node and a gateway, wherein the gateway is located between the first node and the center system.   
     
     
         4 . The method according to  claim 3 , wherein the gateway is located within the edge system. 
     
     
         5 . The method according to  claim 1 , further comprising:
 determining, by the first node, when detecting that the first node is in an active state, that the current working mode of the first node is the master node working mode, or determining, by the first node, when detecting that the first node is in an inactive state, that the current working mode of the first node is the standby node working mode.   
     
     
         6 . The method according to  claim 1 , further comprising:
 determining, by the first node, when detecting that a service application on the first node is in a running state, that the current working mode of the first node is the master node working mode, or determining, by the first node, when detecting that the service application on the first node is in a stopped state, that the current working mode of the first node is the standby node working mode.   
     
     
         7 . The method according to  claim 1 , further comprising:
 determining, by the first node, when detecting that no state identifier exists on the first node, that the current working mode of the first node is the master node working mode, or determining, by the first node, when detecting that a state identifier exists on the first node, that the current working mode of the first node is the standby node working mode.   
     
     
         8 . A method, applicable to a first node in an edge system, wherein the first node is connected to a center system, and the method comprises:
 monitoring, by the first node, a status of a connection between the first node and the center system when determining that a current working mode of the first node is a master node working mode, and switching, by the first node, to a standby node working mode when determining that the connection between the first node and the center system is disconnected; and   monitoring, by the first node, a command from the center system when determining that the current working mode of the first node is the standby node working mode, and switching to the master node working mode when receiving a switch-to-master command sent by the center system, wherein the switch-to-master command notifies the first node to switch from the standby node working mode to the master node working mode.   
     
     
         9 . The method according to  claim 8 , wherein the edge system further comprises a second node, the second node is connected to the center system, and the method further comprises:
 monitoring, by the first node, a second status of a second connection between the first node and the second node; and   maintaining the current working mode of the first node when determining that the connection between the first node and the second node is disconnected or connected.   
     
     
         10 . The method according to  claim 8 , wherein the monitoring, by the first node, the status of the connection between the first node and the center system comprises:
 monitoring, by the first node, a third status of a third connection between the first node and a gateway, wherein the gateway is located between the first node and the center system.   
     
     
         11 . The method according to  claim 10 , wherein the gateway is located within the edge system. 
     
     
         12 . The method according to  claim 8 , wherein the method further comprises:
 determining, by the first node, when detecting that the first node is in an active state, that the current working mode of the first node is the master node working mode, or determining, by the first node, when detecting that the first node is in an inactive state, that the current working mode of the first node is the standby node working mode;   or   determining, by the first node, when detecting that a service application on the first node is in a running state, that the current working mode of the first node is the master node working mode, or determining, by the first node, when detecting that the service application on the first node is in a stopped state, that the current working mode of the first node is the standby node working mode;   or   determining, by the first node, when detecting that no state identifier exists on the first node, that the current working mode of the first node is the master node working mode, or determining, by the first node, when detecting that a state identifier exists on the first node, that the current working mode of the first node is the standby node working mode.   
     
     
         13 . A system, comprising:
 a first node, a second node, and a center system,   wherein the first node and the second node are located in an edge system, the first node and the second node are both connected to the center system, a current working mode of the first node is a master node working mode, and a second current working mode of the second node is a standby node working mode,   wherein the first node comprises:
 first at least one processor; and 
 a first non-transitory computer readable storage medium storing first programming, the first programming including first instructions that, when executed by the first at least one processor, cause the first node to perform first operations including: 
 monitoring a status of a connection between the first node and the center system, and switching to the standby node working mode when the connection between the first node and the center system is disconnected, 
   wherein the center system comprises:
 third at least one processor; and 
 a third non-transitory computer readable storage medium storing third programming, the third programming including third instructions that, when executed by the third at least one processor, cause the center system to perform third operations including: 
 monitoring the status of the connection between the center system and the first node, and sending a switch-to-master command to the second node when the connection between the center system and the first node is disconnected, wherein the switch-to-master command notifies the second node to switch from the standby node working mode to the master node working mode, and 
   wherein the second node comprises:
 second at least one processor; and 
 a second non-transitory computer readable storage medium storing second programming, the second programming including second instructions that, when executed by the second at least one processor, cause the second node to perform second operations including: 
 switching to the master node working mode based on the switch-to-master command. 
   
     
     
         14 . The system according to  claim 13 , wherein the first operations performed by the first node further comprise:
 monitoring a second status of a second connection between the first node and the second node; and   maintaining the current working mode of the first node or the second current working mode of the second node when determining that the second connection between the first node and the second node is disconnected or connected.   
     
     
         15 . The system according to  claim 13 , wherein the monitoring the status of the connection between the first node and the center system performed by the first node comprises:
 monitoring a third status of a third connection between the first node and a gateway, wherein the gateway is located between the first node and the center system.   
     
     
         16 . The system according to  claim 15 , wherein the gateway is located within the edge system. 
     
     
         17 . The system according to  claim 13 , wherein the first operations performed by the first node further comprise:
 determining, when detecting that the first node is in an active state, that the current working mode of the first node is the master node working mode, or determining, when detecting that the first node is in an inactive state, that the current working mode of the first node is the standby node working mode.   
     
     
         18 . The system according to  claim 13 , wherein the first operations performed by the first node further comprise:
 determining, when detecting that a service application on the first node is in a running state, that the current working mode of the first node is the master node working mode, or determining, when detecting that the service application on the first node is in a stopped state, that the current working mode of the first node is the standby node working mode.   
     
     
         19 . The system according to  claim 13 , wherein the first operations performed by the first node further comprise:
 determining, when detecting that no state identifier exists on the first node, that the current working mode of the first node is the master node working mode, or   determining, when detecting that a state identifier exists on the first node, that the current working mode of the first node is the standby node working mode.